Which indefinite article would work best in the following sentence?

on the beach, he built huge sandcastle.

a.
a

b.
an

c.
the

Which sentence from exploring the titanic best indicates the author’s enthusiastic tone at the end of the passage? now, finally, i went to my bunk to get some sleep. when i awoke, it was nighttime, and the good ship knorr was steaming quietly and steadily to our home. they had paid a big price over the years during my long months away from home, but they’d never once complained. as we came into port, i couldn’t believe my eyes.

Hyperbole in the book messenger by lois lowry

How is the word laud and welcome different